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Dubravka Šipuš, 2nd year
2013/2014
Mentor: A. Žmegač Horvat
 Hemostasis – prevention of blood loss
 Mechanisms:
1) Vascular constriction
2) Formation of a platelet plug
3) Formation of a blood clot
4) Growth of fibrous tissue
 Fast process
 Procoagulants and anticoagulants
 Complex cascade of chemical reactions
 Blood coagulation factors
 Formation of prothrombin activator
 Extrinsic pathway
 Intrinsic pathway
 Endothelial surface factors (smoothness,
glycocalyx, thrombomodulin)
 Antithrombin III - heparin cofactor
 Coumarin (warfarin)
 Citrate ion, oxalate
 Vitamin K deficiency
 Diseases of the liver
 Hemophilia
 Thrombocytopenia
 Hemophilia A - abnormality or deficiency of
Factor VIII
 Recessive sex-linked, X chromosome
disorder
 Guyton, Hall: Textbook of Medical Physiology

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file5443p77.ppt

  • 1. Dubravka Šipuš, 2nd year 2013/2014 Mentor: A. Žmegač Horvat
  • 2.  Hemostasis – prevention of blood loss  Mechanisms: 1) Vascular constriction 2) Formation of a platelet plug 3) Formation of a blood clot 4) Growth of fibrous tissue
  • 3.  Fast process  Procoagulants and anticoagulants  Complex cascade of chemical reactions  Blood coagulation factors
  • 4.
  • 5.  Formation of prothrombin activator  Extrinsic pathway  Intrinsic pathway
  • 6.
  • 7.
  • 8.
  • 9.  Endothelial surface factors (smoothness, glycocalyx, thrombomodulin)  Antithrombin III - heparin cofactor  Coumarin (warfarin)  Citrate ion, oxalate
  • 10.  Vitamin K deficiency  Diseases of the liver  Hemophilia  Thrombocytopenia
  • 11.  Hemophilia A - abnormality or deficiency of Factor VIII  Recessive sex-linked, X chromosome disorder
  • 12.  Guyton, Hall: Textbook of Medical Physiology